Improvement in burglar-alarms



W. REYNOLDS. BurgIaJr AIarm No. 105,369. Patented July 12, 1870.

WITNESSES;

NPEIERS. PHDTO-LITD'IOGRAPHER.WASHXNGTON, b. c.

itched gtatez fitment ctjijiire.

wltttA-nnurnows, or MANCHESTER, NEW HAMPSHIRE.

Letters Patent No. 105,369, dated July 12, 1870.

IMPROVEMENT IN BURGLAR-ALARMSL i i I, WILLIAM Rm'sows, of Manchester, inthe county of Hillshorough and State of New Hampshire,

have invented certain Improvements in Burglar- Alarms, of which thefollowingis a specification. Y My invention-relates tovalarms to be usedin houses, for the purpose of giving an alarm should the house heentered by burglars 'tin ough the doors orwindows to which the alarm isconnected.

The nature of my invention consists in the construction andarrangementbt' the devices for springing the alarm fortheabove-mentioned purpose, as will be hereinafter fully explained. Intheaccom panying drawing, which is a perspectviewv i A 13 represent thetwo flat pieces, fastened together i at right anglesQto each other, towhich the various v parts of the alarm are attached.

'lovthc piece A is secured a frame, in which is located the ordinarygearing used in alarm-clocks, with a flat coiled spring, 860.

Thegongor hell 0 is also secured to the piec'eA. Inthe frame inwhich thegearing is placedis a shaft, (1, on one side of which is a curvedratchet, I), its ends being tinned inward, and which engage the teeth ofthe ratchet-wheel D. a i crepresents an arm, which extends out from theshaft to, with a ball on itsonter end, which, when the alarm is wound upandsct, isheld up above the gong orbell; it a Secured to the piece B isa post or rod, (1, the upl per end of which ispointed. v

I e c e c are wires or cords, one end of each being attached totheshortrod f, and their other ends to spiral springs or theirequivalents, g g g g, and to the otherends of these springsare attachedwires or cords h h h h, the othcrends of which are attached to the doorsor windows in the lower portion of the house.

Attached to the shaft a is a rod or arm, 'i, which extends ont over thepost or rod (1. 4

Its operation is as follows: i The outer ends of the cords h areattached to the doors or windows, and the. lower end of the rod f isplaced on the upper end of the post or rod (I, with outerend of the rod42 resting on its upper enchas shown in' thedrawing.

When the rod 11 is'in this position, the upper end of the ratchet 7)holds the ratchet-wheel D and its connecting parts stationary, the ballon the outer end of thearm 0 being raised above the gong'or hell 0.

When one of the cords It is pulled by the opening of a door or window,or from any cause, it displaces the rod f from off the post or rod lland from under the arm 1, whichreleases the upper end of the curvedratchet b from the ratchet-wheel D, which is now .caused to revolve bymeans of the spring j, and the teeth of the ratchet-wheel, striking theends of the ratchet I), give a rapid vibratory motion to the arm a andthe ball which strikes the gong or hell, thus sounding an alarm.

Having thus fully described my invention,

, \Vhat I claim, and desire to secure by Let-ters Pat- 'ihe combinationand arrangement of the post at, detached rod 1, springs g, or theirequivalents, and arm or rod 1', with its operative parts, whenconstructed and operating substantially as shown and described.

7 WILLIAM REYNOLDS.

\Vitnesses:

CHARLES DAVIS, DAVID 1.- Nonnis.

